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Army lamp HF-VHF radio "R-323M" (Tsifra-M) was produced since 1978. '' R-323M '' is designed to receive telegraph signals and signals with amplitude and frequency modulation. The radio is assembled according to the superheterodyne scheme, with two frequency conversions. It has four subranges. Frequency indication is carried out using LED indicators. The bandwidth is switchable, has three positions. The receiver has no gain controls. At the input there is a step attenuator with attenuation of 0, 20 and 40 dB. In appearance, this radio is similar to the receiver "R-326M", the difference in the range of received frequencies. Main technical characteristics: The range of received frequencies 20 ... 100 MHz. Formation / setting frequency - smooth local oscillator (LC generator). Sensitivity in AM mode (narrow / wide band) - 3/5 µV, FM - 2.5 µV, CW 1 µV. Attenuation in the mirror channel at least 800 times. The nominal supply voltage is 12 V. The overall dimensions are 255x270x370 mm.